.container {
    /* The following code makes container center both horizontally and vertically */
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
}

#showboard{
    font-size: 48pt;
}
